Biology: Life on Earth with Physiology (11th Edition)
Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Chapter 1, Problem 3MC
Summary Introduction

Introduction:

Mutation is defined as the sudden unpredictable change in the sequence of DNA. It results in an alteration in DNA sequence. Mutation is caused by environmental factors such as ionizing and non-ionizing radiation, chemical agents such as sodium azide, bromine and so on.

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If this model continues, with no major changes to the environment, what do you expect to happen? A) rabbits will continue to get lighter over time B) there is no way to predict because mutations are random C) mutations will all die out leaving only the original fur color D) dark gray fur will become the common phenotype because it favors survival
Are gene mutations caused by selective pressures in the environment? In other words, do gene mutations arise in an organism out of need or want? Group of answer choices A. No, because gene mutations are not purely random. B. Yes, because gene mutations are not purely random. C. No, because gene mutations are purely random. D. Yes, because gene mutations are purely random.
Mutations cause variations among individuals. If these variations provide an advantage to individuals, then the resulting traits are known as adaptations. Which of the following statements about adaptations is incorrect?  A. They are structural or physiological in nature.   B. They modify the behaviour of organisms.   C. They provide a selective advantage in any environment.   D .They increase reproductive success of organisms.

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Biology: Life on Earth with Physiology (11th Edition)

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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY